Perhaps you should try some spelling variations:
1.3 communication » 2.3 communication, 13 communication, 4.3 communication
information cost » information costs, information lost, information case
development can » development case, development co, development canada
cost debates » los debates, old debates
debates 1.3 » debates 10.3, debates 12.3, debates 13.3
can africa » urban africa
costs 2 » costs 20, costs _, costs 4

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology _ information cost debates 1.3 communication costs 2 development can africa.*.